P0565

DTC P0565

Circuit Description

The cruise control switch is an input to the instrument panel cluster (IPC). The IPC monitors the cruise control set/coast and resume/accelerate switch signal circuit in order to detect when a cruise control function has been requested. The IPC detects a specific voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit when a cruise control function switch is activated, with each switch having a different predetermined voltage value. Once a cruise control function has been requested, the IPC sends a command via serial data to the engine control module (ECM).

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0565 Cruise Control Switch Circuit

Conditions for Setting the DTC

* The engine is running.
* Battery voltage is greater than 8 volts.
* The ECM detects the switch is switching too quickly.

Action Taken When the DTC Sets

* The malfunction indicator lamp (MIL) will not illuminate.
* The ECM will record operating conditions at the time the diagnostic fail. This information will be stored in the Freeze Frame and Failure Records buffers.
* A history DTC is stored.
* The A/C compressor operation will be disabled while the low voltage indication exists.

Conditions for Clearing the MIL/DTC

* A history DTC will clear after 40 consecutive warm-up cycles without a fault.
* DTCs can be cleared by using the scan tool.
* Disconnecting the ECM battery feed for more than 10 seconds

Diagnostic Aids

Inspect for internments and poor connections. Refer to Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics).

Test Description

The numbers below refer to the step numbers on the diagnostic table.
2. This step tests the cruise control ON/OFF switch using the scan tool.

6. This step tests the cruise control ON/OFF switch signal circuit.